Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 36
o, the potential differ-ence between P and Q is then the same as that between A and B. Thisi- proportional to the distance PQ, and is positive on one side and nega-tive on the other side of Q. The distances PQ could, therefore, be useda- ordinates, and the corresponding positions of the contact… … to make up the curves of these quantities, the instrument is so arrangedthai as .0011 a- any instantaneous value of the current or voltage hasbeen balanced against the potentiometer coil its value is immediatelyprinted on a sheet of cross-section paper mounted on a cylinder the axisof which is…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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